# knowsugar vs Uncaf

The clearest difference is in-app purchases: knowsugar at none against Uncaf's 3. knowsugar also leads on iOS requirement (13.0 vs 15.1). Uncaf's advantage is update cadence (every 3 weeks vs every 4 months). On price, ads and device support there is nothing between them.

Both are free to download. Uncaf sells 3 in-app purchases, starting at $9.99 per month. knowsugar asks for nothing beyond the download.

knowsugar ships an update every 4 months, Uncaf every 3 weeks. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | knowsugar | Uncaf |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/knowsugar/id6752961484/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 4 MB | 43 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Amith Wijesuriya](https://appshunter.io/developer/1841961401) | [Takeaki Shimizu](https://appshunter.io/developer/1271085282) |

## What reviewers say

### knowsugar

[App page](https://appshunter.io/ios/app/knowsugar/id6752961484)

This app helps you monitor your added sugar intake by setting a personal daily limit. It offers quick logging, visual progress tracking, and activity suggestions to help you understand and manage your sugar habits over a short period.

**Highlights:** Personal daily sugar limit, Fast sugar logging, Clear daily sugar budget visualization, Activity ideas to 'burn off' sugar, Trends and habit profile, Family-friendly treat meter

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Uncaf

[App page](https://appshunter.io/ios/app/uncaf-quit-caffeine-tracker/id6759274216)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Plan | $9.99 | per month |
| Annual Plan | $29.99 | per year |
| Lifetime Access | $49.99 | one-time |


## Frequently asked questions

### Is knowsugar free?

knowsugar is free to download, with no in-app purchases.

### Is Uncaf free?

Uncaf is free to download, with in-app purchases available.

### Do knowsugar or Uncaf have ads?

Neither knowsugar nor Uncaf shows ads.

### Which is updated more often, knowsugar or Uncaf?

knowsugar ships an update every 4 months, and Uncaf every 3 weeks. Most recently, knowsugar was updated on November 5, 2026 and Uncaf on October 31, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*